Structure 8301 · Pima County, AZ

Madera Canyon RD over Medium Wash

Carries Madera Canyon RD over Medium Wash, 0.4 Mi S White Hs Cyn R.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT82 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

82 ft end to end, longest span 27 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built1935rebuilt 1954
Length82.0 ft25 m
Daily traffic1,200counted 2022
Last inspectedDecember 2023every 24 months

Location

StateArizona
CountyPima
Location0.4 Mi S White Hs Cyn R
CarriesMadera Canyon RD
CrossesMedium Wash
Coordinates31.78791, -110.88443

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length82.0 ft (25 m)
Max Span26.9 ft (8.2 m)
Deck Width16.4 ft (5 m)
Deck Area125 sq m
Main Spans3
Year Built1935 (reconstructed 1954)

Traffic

Avg Daily Traffic1,200 (2022)
Lanes On Bridge1

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number08301

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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